I think so much gets blown out of proportion about independent breeders. Cause it seems collaborative networks is what's always really grown cannabis diversity, IMO. Look at DJ Short. Everything in the cannabis industry was turned on it's head because of how he collaborated with people. Different breeding techniques, and different grow environments builds cross vigor, when sisters are traded back and forth.
Simply put; When plants become well traveled, they become well adapted. I've got a background in biology, and I think there's solid evidence to support idea's behind what I'm suggesting here. Simply put, the more stuff gets passed around, the better it gets. Plants learn, and they remember, and they learn new adaption from microbes, and environmental conditions. All sorts of combinations an variables.
Being grown inside, and outside.